Add @types/prismjs to fix build

Install TypeScript type definitions for prismjs to fix build errors.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: stared

package.json

@@ -21,6 +21,7 @@
   "packageManager": "[email protected]",
   "devDependencies": {
     "@types/node": "^24.9.2",
+    "@types/prismjs": "^1.26.5",
     "@typescript-eslint/eslint-plugin": "^8.46.2",
     "@typescript-eslint/parser": "^8.46.2",
     "eslint": "^9.39.0",